Skip to content

Sorry, this Argon 18 Nitrogen Pro Road Bike - 2018, Medium has been sold.

Try these similar items:

Argon 18 Nitrogen Pro Road Bike - 2018, Medium

Item #BRD25650
Condition: Certified Pre-Owned
Fit Range: 5'7" - 5'10"
Regular price

Trade In
Every Certified Pre-Owned bike passes our 141-point inspection
  • Frame integrity verified
  • All components inspected
  • Drivetrain cleaned and tuned
  • Suspension adjusted
  • Wheels trued

Our RideFast shipping means this bike gets to you quickly and securely. Domestic US ground rates are a flat $135 for regular bikes or $150 for e-bikes.

Quick Assembly
  • Bikes arrive tuned and mostly pre-assembled
  • Torque tool & video guide included
  • Get riding in 15 minutes
Canadian Customers

Please note that any duties, taxes, or surcharges as required by Canadian customs and provincial authorities will be the buyer's responsibility. Shipping to Canadian addresses may take longer than expected due to customs.

Guaranteed Buyback

We'll happily purchase this bike back from you when you're ready for your next upgrade. A TPC buyback offer is guaranteed for 18 month on all qualifying bikes.

More details More details icon
30-Day Returns

If this bike isn't perfect for you, our Ride Guides will help you find the right one.

More details More details icon

Road Race Weapon

Why We Love It
Argon 18 seems to have narrowed their focus on 3 things with the Nitrogen: Aerodynamics, Low Weight, Extreme Power Transfer. We don't want to mis-lead, so if you're looking for an Argon 18 with compliance and comfort in mind, we would encourage you to look at the Krypton. Now, if you're looking for a road bike with uncompromised speed and performance in mind, you're in the right place! The response from the frame when you put power to the pedals is incredible. It's immediately clear when hopping aboard the Nitrogen that the frame is taking full advantage of your precious watts to power the bike forward with maximum efficiency. To ensure that power transfer isn't going to waste, Argon 18 put tireless effort into a super slippery frame that cuts through the air with ease.
  • Shimano Dura-Ace R610 Sprint Shifters for more customization.
  • New Vittoria Zaffiro Pro Graphene 2.0 tires for performance training in all conditions.
  • New bottom bracket for smooth spinning.
  • New KMC chain to optimize crisp shifting.
  • New brake hoods for improved comfort & control.
  • Power2Max Power Meter.*
Master Mechanic’s Notes
  • Moderate scratches on the backside of the seat tube.
  • Moderate paint chips on the drive side chainstay.
  • Small scratches on the inside of the drive side chainstay.
  • Small paint chips on the down tube.
  • Small scratches on the frame, rims, & cranks.
  • The non-drive side chainstay was professionally repaired by Broken Carbon in Boulder, CO, and that repair comes with their 5-year limited warranty.
Toggle accordion
Year 2018
Brand Argon 18
Model Nitrogen Pro
Size Medium
Frame Material Carbon Fiber
Drivetrain Shimano, 2x11 spd
Weight 16 lbs 15 oz
Fork Argon 18 N7, Carbon
Brakes TRP, Direct/Linear Pull (V-Brakes)
Shifters Shimano Dura-Ace Di2 9070 w/ Dura-Ace Di2 610 Sprint Shifters , Electronic
Front Derailleur Shimano Dura-Ace Di2 9070
Rear Derailleur Shimano Ultegra Di2 R8050
Bottom Bracket Shell Press fit
Crankset Rotor 3D Alloy, 52/36t, 170mm
Cassette Shimano Ultegra R8000, 14-28t
Chain KMC
Handlebar Argon AHB5000 Carbon, 42cm
Headset Aero 3D
Stem Argon AHB5000 Carbon, N/A x 130mm, 6°
Seatpost Argon ASP5100 Carbon, Frame Specific
Saddle fi'zi:k Arione
Front Axle Spacing 9x100mm (Quick Release)
Rear Axle Spacing 10x130mm
Wheelset ENVE SES 4.5 Carbon, DT Swiss 240s
Front Tire Continental Grand Prix 5000, 700C x 25C
Rear Tire Vittoria Zaffiro Pro Graphene 2.0, 700C x 25C
Tire Type Clincher
Tubeless Compatibility Wheels are not tubeless compatible
Charger Included Yes
Pedals Sold separately
Toggle accordion
Bike geometry chart
Inspected. Tested. Trusted.

What is CPO?

CPO bikes are gently ridden bikes that have been meticulously inspected, restored and serviced. Every CPO bike is cleaned, tuned and tested in our top-of-the-line Colorado headquarters. Road, mountain, ebike or gravel, TPC services each bike over 8 phases and 141 points of inspection.

Bikes are meant
to be used.